16940100078631 has 2 divisors, whose sum is σ = 16940100078632. Its totient is φ = 16940100078630.

The previous prime is 16940100078617. The next prime is 16940100078661. The reversal of 16940100078631 is 13687000104961.

16940100078631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16940100078631 - 2³⁵ = 16905740340263 is a prime.

It is a super-2 number, since 2×16940100078631² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16940100078661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8470050039315 + 8470050039316.

It is an arithmetic number, because the mean of its divisors is an integer number (8470050039316).

Almost surely, 2^{16940100078631} is an apocalyptic number.

16940100078631 is a deficient number, since it is larger than the sum of its proper divisors (1).

16940100078631 is an equidigital number, since it uses as much as digits as its factorization.

16940100078631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 46.

The spelling of 16940100078631 in words is "sixteen trillion, nine hundred forty billion, one hundred million, seventy-eight thousand, six hundred thirty-one".